I do think complexity could be part of why we don't have many options here, but I don't agree that a layout engine is too difficult to maintain. More of the issue is that CSS layout (and maybe layout in general) is not widely well-understood. I've almost _never_ come across people interested in layout because generally it's a few properties to get something working and then you move on.
> few organizations have the resources to maintain a rendering engine long-term
I'm curious are there other instances of this happening than Edge switching to Blink? That event was one of my main motivators; it felt like further consolidation of obscure knowledge.
